Encryption and authentication systems and methods
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United States of America Patent
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Nov 18, 2014
Issued Date -
N/A
app pub date -
Mar 29, 2013
filing date -
Mar 5, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Methods, apparatus, and systems are disclosed for, among other things, secure passphrase handling for computing devices. In one respect, a method is provided. The method includes receiving a plurality of passphrase elements from an input device. The method also includes performing a sequence of secure delay processing operations, each operation generating a delayed output value from an initial value. The passphrase is verified upon completion of the sequence of secure delay processing operations. Further, initial values of respective secure delay processing operations are based on respective passphrase elements and, for each secure delay processing operation after a first secure delay processing operation, a delayed output value from at least one other secure delay processing operations.
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